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Scuffing performance of a hard coating under EHL conditions at sliding speeds up to 16 m/s and contact pressures up to 2.0 GPa

Snidle, Raymond Walter, Dhulipalla, A. K., Evans, Henry Peredur and Cooper, C. V. 2008. Scuffing performance of a hard coating under EHL conditions at sliding speeds up to 16 m/s and contact pressures up to 2.0 GPa. Journal of Tribology 130 (2) , 021301. 10.1115/1.2842253

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Abstract

Scuffing experiments were conducted using 76 mm diameter disks both with and without a metal-containing, carbon-based hard coating. The operating conditions in the experiments were severe with sliding speeds up to 16 m/s and maximum Hertzian contact pressures up to 2.0 GPa. The disks were of alloy steel, which was case carburized and hardened followed by axial grinding. Four different surface conditions were investigated as follows: ground/uncoated, ground/coated, superfinished/uncoated, and superfinished/coated. Experiments were also carried out in which ground/coated disks were run against ground/uncoated disks. The results of the experiments show that the addition of the hard coating to the ground disks significantly improved both their scuffing resistance and frictional behavior, but the coating was less effective in producing an improvement in the durability and friction of the superfinished disks.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Uncontrolled Keywords: Alloy steel; coatings; discs (structures); durability; elasticity; lubricants; lubrication; mechanical contact; sliding friction; surface hardening
Publisher: American Society of Mechanical Engineers
ISSN: 0742-4787
Last Modified: 02 Jan 2018 21:14
URI: http://orca.cf.ac.uk/id/eprint/5469

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